Apparatus, system and method of providing offloadability information to a user-equipment (UE)

ABSTRACT

Some demonstrative embodiments include devices, systems and methods of providing offloadability information to a User Equipment (UE). For example, a core network (CN) may provide to the UE Packet Data Network (PDN) offloadability information corresponding to one or more PDN connections of the UE, the PDN offloadability information indicating which PDN connection of the one or more PDN connections is able to be offloaded to a Wireless Local Area Network (WLAN).

CROSS REFERENCE

This application claims the benefit of and priority from U.S.Provisional Patent Application No. 61/924,194 entitled “AdvancedWireless Communication Systems and Techniques”, filed Jan. 6, 2014, theentire disclosure of which is incorporated herein by reference.

TECHNICAL FIELD

Some embodiments described herein generally relate to providingoffloadability information to a User Equipment (UE).

BACKGROUND

A wireless communication device, e.g., a mobile device, may beconfigured to utilize multiple wireless communication technologies.

For example, a User Equipment (UE) device may be configured to utilize acellular connection, e.g., a Long Term Evolution (LTE) cellularconnection, as well as a wireless-local-area-network (WLAN) connection,e.g., a Wireless-Fidelity (WiFi) connection.

There exists a need for solutions to enhance a level of cooperationand/or integration between WLAN and cellular networks.

BRIEF DESCRIPTION OF THE DRAWINGS

For simplicity and clarity of illustration, elements shown in thefigures have not necessarily been drawn to scale. For example, thedimensions of some of the elements may be exaggerated relative to otherelements for clarity of presentation. Furthermore, reference numeralsmay be repeated among the figures to indicate corresponding or analogouselements. The figures are listed below.

FIG. 1 is a schematic block diagram illustration of a system, inaccordance with some demonstrative embodiments.

FIG. 2 is a schematic illustration of a sequence diagram of operationsperformed by a User Equipment (UE), a Wireless Local Area Network (WLAN)Access Point (AP), a Node, and a Core Network (CN), in accordance withsome demonstrative embodiments.

FIG. 3 is a schematic illustration of a sequence diagram of operationsperformed by a UE, an evolved Node B (eNB), and a Mobility ManagementEntity (MME), in accordance with some demonstrative embodiments.

FIG. 4 is a schematic flow-chart illustration of a method of providingoffloadability information to a UE, in accordance with somedemonstrative embodiments.

FIG. 5 is a schematic flow-chart illustration of a method of UE-centricaccess network selection, in accordance with some demonstrativeembodiments.

FIG. 6 is a schematic illustration of a product, in accordance with somedemonstrative embodiments.

DETAILED DESCRIPTION

In the following detailed description, numerous specific details are setforth in order to provide a thorough understanding of some embodiments.However, it will be understood by persons of ordinary skill in the artthat some embodiments may be practiced without these specific details.In other instances, well-known methods, procedures, components, unitsand/or circuits have not been described in detail so as not to obscurethe discussion.

Discussions herein utilizing terms such as, for example, “processing”,“computing”, “calculating”, “determining”, “establishing”, “analyzing”,“checking”, or the like, may refer to operation(s) and/or process(es) ofa computer, a computing platform, a computing system, or otherelectronic computing device, that manipulate and/or transform datarepresented as physical (e.g., electronic) quantities within thecomputer's registers and/or memories into other data similarlyrepresented as physical quantities within the computer's registersand/or memories or other information storage medium that may storeinstructions to perform operations and/or processes.

The terms “plurality” and “a plurality”, as used herein, include, forexample, “multiple” or “two or more”. For example, “a plurality ofitems” includes two or more items.

References to “one embodiment,” “an embodiment,” “demonstrativeembodiment,” “various embodiments,” etc., indicate that theembodiment(s) so described may include a particular feature, structure,or characteristic, but not every embodiment necessarily includes theparticular feature, structure, or characteristic. Further, repeated useof the phrase “in one embodiment” does not necessarily refer to the sameembodiment, although it may.

As used herein, unless otherwise specified the use of the ordinaladjectives “first,” “second,” “third,” etc., to describe a commonobject, merely indicate that different instances of like objects arebeing referred to, and are not intended to imply that the objects sodescribed must be in a given sequence, either temporally, spatially, inranking, or in any other manner.

Some embodiments may be used in conjunction with various devices andsystems, for example, a User Equipment (UE), a Mobile Device (MD), awireless station (STA), a Personal Computer (PC), a desktop computer, amobile computer, a laptop computer, a notebook computer, a tabletcomputer, a Smartphone device, a server computer, a handheld computer, ahandheld device, a Personal Digital Assistant (PDA) device, a handheldPDA device, an on-board device, an off-board device, a hybrid device, avehicular device, a non-vehicular device, a mobile or portable device, aconsumer device, a non-mobile or non-portable device, a wirelesscommunication station, a wireless communication device, a wirelessAccess Point (AP), a wireless node, a base station (BS), a wired orwireless router, a wired or wireless modem, a video device, an audiodevice, an audio-video (A/V) device, a wired or wireless network, awireless area network, a cellular network, a cellular node, a cellulardevice, a Wireless Local Area Network (WLAN), a Multiple Input MultipleOutput (MIMO) transceiver or device, a Single Input Multiple Output(SIMO) transceiver or device, a Multiple Input Single Output (MISO)transceiver or device, a device having one or more internal antennasand/or external antennas, Digital Video Broadcast (DVB) devices orsystems, multi-standard radio devices or systems, a wired or wirelesshandheld device, e.g., a Smartphone, a Wireless Application Protocol(WAP) device, vending machines, sell terminals, and the like.

Some embodiments may be used in conjunction with devices and/or networksoperating in accordance with existing Long Term Evolution (LTE)specifications (including 3GPP TS 36.300 (3GPP TS 36.300 V11.7.0(2013-09); Technical Specification; 3rd Generation Partnership Project;Technical Specification Group Radio Access Network; Evolved UniversalTerrestrial Radio Access (E-UTRA) and Evolved Universal TerrestrialRadio Access Network (E-UTRAN); Overall description; Stage 2 (Release11)); 3GPP TS 36.331 (3GPP TS 36.331 V11.5.0 (2013-09); TechnicalSpecification; 3rd Generation Partnership Project; TechnicalSpecification Group Radio Access Network; Evolved Universal TerrestrialRadio Access (E-UTRA); Radio Resource Control (RRC); Protocolspecification (Release 11)); 3GPP TS 36.304 (3GPP TS 36.304 V11.5.0(2013-09); Technical Specification; 3rd Generation Partnership Project;Technical Specification Group Radio Access Network; Evolved UniversalTerrestrial Radio Access (E-UTRA); User Equipment (UE) procedures inidle mode; (Release 11)); 3GP TS 24.008 (3GPP TS 24.008 V12.4.0(2013-12); Technical Specification; 3rd Generation Partnership Project;Technical Specification Group Core Network and Terminals; Mobile radiointerface Layer 3 specification; Core network protocols; Stage 3(Release 12)); 3GPP TS 24.301 (3GPP TS 24.301 V12.3.0 (2013-12);Technical Specification; 3rd Generation Partnership Project; TechnicalSpecification Group Core Network and Terminals; Non-Access-Stratum (NAS)protocol for Evolved Packet System (EPS); Stage 3 (Release 12)); 3GPP TS23.401 (3GPP TS 23.401 V12.3.0 (2013-12); Technical Specification; 3rdGeneration Partnership Project; Technical Specification Group Servicesand System Aspects; General Packet Radio Service (GPRS) enhancements forEvolved Universal Terrestrial Radio Access Network (E-UTRAN) access(Release 12)); 3GPP TS 25.304 (3GPP TS 25.304 V11.4.0 (2013-09);Technical Specification; 3rd Generation Partnership Project; TechnicalSpecification Group Radio Access Network; User Equipment (UE) proceduresin idle mode and procedures for cell reselection in connected mode(Release 11)); and 3GPP TS 23.402 (3GPP TS 23.402 V12.3.0 (2013-12);Technical Specification; 3rd Generation Partnership Project; TechnicalSpecification Group Services and System Aspects; Architectureenhancements for non-3GPP accesses (Release 12))), and/or futureversions and/or derivatives thereof, devices and/or networks operatingin accordance with existing IEEE 802.16 standards (IEEE-Std 802.16, 2009Edition, Air Interface for Fixed Broadband Wireless Access Systems;IEEE-Std 802.16e, 2005 Edition, Physical and Medium Access ControlLayers for Combined Fixed and Mobile Operation in Licensed Bands;amendment to IEEE Std 802.16-2009, developed by Task Group m) and/orfuture versions and/or derivatives thereof, units and/or devices whichare part of the above networks, and the like.

Some embodiments may be used in conjunction with one or more types ofwireless communication signals and/or systems, for example, RadioFrequency (RF), Frequency-Division Multiplexing (FDM), Orthogonal FDM(OFDM), Single Carrier Frequency Division Multiple Access (SC-FDMA),Time-Division Multiplexing (TDM), Time-Division Multiple Access (TDMA),Extended TDMA (E-TDMA), General Packet Radio Service (GPRS), extendedGPRS, Code-Division Multiple Access (CDMA), Wideband CDMA (WCDMA), CDMA2000, single-carrier CDMA, multi-carrier CDMA, Multi-Carrier Modulation(MDM), Discrete Multi-Tone (DMT), Bluetooth®, Global Positioning System(GPS), Wireless Fidelity (Wi-Fi), Wi-Max, ZigBee™, Ultra-Wideband (UWB),Global System for Mobile communication (GSM), second generation (2G),2.5G, 3G, 3.5G, 4G, 4.5G, Fifth Generation (5G) mobile networks, 3GPP,Long Term Evolution (LTE) cellular system, LTE advance cellular system,High-Speed Downlink Packet Access (HSDPA), High-Speed Uplink PacketAccess (HSUPA), High-Speed Packet Access (HSPA), HSPA+, Single CarrierRadio Transmission Technology (1XRTT), Evolution-Data Optimized (EV-DO),Enhanced Data rates for GSM Evolution (EDGE), and the like. Otherembodiments may be used in various other devices, systems and/ornetworks.

The term “wireless device”, as used herein, includes, for example, adevice capable of wireless communication, a communication device capableof wireless communication, a communication station capable of wirelesscommunication, a portable or non-portable device capable of wirelesscommunication, or the like. In some demonstrative embodiments, awireless device may be or may include a peripheral that is integratedwith a computer, or a peripheral that is attached to a computer. In somedemonstrative embodiments, the term “wireless device” may optionallyinclude a wireless service.

The term “communicating” as used herein with respect to a wirelesscommunication signal includes transmitting the wireless communicationsignal and/or receiving the wireless communication signal. For example,a wireless communication unit, which is capable of communicating awireless communication signal, may include a wireless transmitter totransmit the wireless communication signal to at least one otherwireless communication unit, and/or a wireless communication receiver toreceive the wireless communication signal from at least one otherwireless communication unit. The verb “communicating” may be used torefer to the action of transmitting or the action of receiving. In oneexample, the phrase “communicating a signal” may refer to the action oftransmitting the signal by a first device, and may not necessarilyinclude the action of receiving the signal by a second device. Inanother example, the phrase “communicating a signal” may refer to theaction of receiving the signal by a first device, and may notnecessarily include the action of transmitting the signal by a seconddevice.

Some demonstrative embodiments are described herein with respect to aLTE network. However, other embodiments may be implemented in any othersuitable cellular network or system, e.g., a Universal MobileTelecommunications System (UMTS) cellular system, a GSM network, a 3Gcellular network, a 4G cellular network, a 4.5G network, a 5G cellularnetwork, a WiMax cellular network, and the like.

Some demonstrative embodiments are described herein with respect to aWLAN system. However, other embodiments may be implemented in any othersuitable non-cellular network.

Some demonstrative embodiments may be used in conjunction with aHeterogeneous Network (HetNet), which may utilize a deployment of a mixof technologies, frequencies, cell sizes and/or network architectures,e.g., including cellular, mmWave, and/or the like. In one example, theHetNet may include a radio access network having layers ofdifferent-sized cells ranging from large macrocells to small cells, forexample, picocells and femtocells. Other embodiments may be used inconjunction with any other suitable wireless communication network.

The term “antenna”, as used herein, may include any suitableconfiguration, structure and/or arrangement of one or more antennaelements, components, units, assemblies and/or arrays. In someembodiments, the antenna may implement transmit and receivefunctionalities using separate transmit and receive antenna elements. Insome embodiments, the antenna may implement transmit and receivefunctionalities using common and/or integrated transmit/receiveelements. The antenna may include, for example, a phased array antenna,a single element antenna, a dipole antenna, a set of switched beamantennas, and/or the like.

The term “cell”, as used herein, may include a combination of networkresources, for example, downlink and optionally uplink resources. Theresources may be controlled and/or allocated, for example, by a cellularnode (also referred to as a “base station”), or the like. The linkingbetween a carrier frequency of the downlink resources and a carrierfrequency of the uplink resources may be indicated in system informationtransmitted on the downlink resources.

The phrase “access point” (AP), as used herein, may include an entitythat includes a station (STA) and provides access to distributionservices, via the Wireless Medium (WM) for associated STAs.

The term “station” (STA), as used herein, may include any logical entitythat is a singly addressable instance of a medium access control (MAC)and a physical layer (PHY) interface to the WM.

Reference is now made to FIG. 1, which schematically illustrates a blockdiagram of a system 100, in accordance with some demonstrativeembodiments.

As shown in FIG. 1, in some demonstrative embodiments, system 100 mayinclude one or more wireless communication devices capable ofcommunicating content, data, information and/or signals via one or morewireless mediums, for example, a radio channel, a cellular channel, anRF channel, a Wireless Fidelity (WiFi) channel, an IR channel, and thelike, e.g., as described below. One or more elements of system 100 mayoptionally be capable of communicating over any suitable wiredcommunication links.

In some demonstrative embodiments, system 100 may include at least oneUser Equipment (UE) 102 capable of communicating with one or more wirednetworks 180 via at least one Radio Access Network (RAN) 119, and/or atleast one non-cellular network, e.g., as described below.

In some demonstrative embodiments, networks 180 may include one or morePacket Data Networks (PDNs). For example, networks 180 may include anInternet network, an IP Multimedia Core Network Subsystem (IMS) network,and/or any other PDN. In other embodiments, networks 180 may include anyother suitable additional and/or alternative network.

In some demonstrative embodiments, RAN 119 may include one or more cellscontrolled by one or more cellular nodes (“nodes”). For example, RAN 119may include an evolved Node B (eNB) 104, a Node B 196, and/or any othercellular node, e.g., a Base Station (BS), a Base Transceiver Station(BTS), and the like.

In some demonstrative embodiments, eNB 104 may be configured to performradio resource management (RRM), radio bearer control, radio admissioncontrol (access control), connection mobility management, resourcescheduling between UEs and eNB radios, e.g., Dynamic allocation ofresources to UEs in both uplink and downlink, header compression, linkencryption of user data streams, packet routing of user data towards adestination, e.g., another eNB or an Evolved Packet Core (EPC),scheduling and/or transmitting paging messages, e.g., incoming callsand/or connection requests, broadcast information coordination,measurement reporting, and/or any other operations.

In some demonstrative embodiments, system 100 may also include a CoreNetwork (CN or CNW) 160, which may be configured to provide one or moreservices to UE 102, and/or to setup and/or manage communication betweenUE 102 and RAN 119 and/or networks 180, e.g., as described below.

In some demonstrative embodiments, CN 160 may include one or more PDNGateways (PGWs) 173 to support a PDN connection between UE 102 and a PDNof network 180.

In some demonstrative embodiments, a PGW 173 may be associated with anAccess Point Name (APN). UE 102 may utilize the APN of a PGW 173, forexample, to facilitate a connection to network 180 via the PGW 173.

In some demonstrative embodiments, core network 160 may include amobility manager, e.g., a Mobility Management Entity (MME) 162, tomanage one or more mobility-related aspects of a mobility of UE 102between Radio Access Technology (RAT) networks, e.g., as describedbelow.

In some demonstrative embodiments, MME 162 may include one or moreinterfaces to interface between MME 162 and one or more other elementsof system 100, e.g., as described below.

In some demonstrative embodiments, MME 162 may include an eNB interface164 to communicate with eNB 104, e.g., as described below. For example,eNB interface 164 may include an S1-MME interface to communicate witheNB 104 according to an S1 Application protocol (AP) (S1AP).

In some demonstrative embodiments, MME 162 may include a Home SubscriberServer (HSS) interface 166 to communicate with an HSS 161, e.g., asdescribed below. For example, HSS interface 166 may include a S6interface, or any other interface.

In some demonstrative embodiments, system 100 may include a non-cellularnetwork, for example, a WLAN, e.g., a Basic Service Set (BSS), managedby an Access Point (AP) 106.

In some demonstrative embodiments, the non-cellular network may at leastpartially be within a coverage area of RAN 119. For example, AP 106 maybe within a coverage area of eNB 104.

In some demonstrative embodiments, UE 102 may include, for example, amobile computer, a MD, a STA, a laptop computer, a notebook computer, atablet computer, an Ultrabook™ computer, a mobile internet device, ahandheld computer, a handheld device, a storage device, a PDA device, ahandheld PDA device, an on-board device, an off-board device, a hybriddevice (e.g., combining cellular phone functionalities with PDA devicefunctionalities), a consumer device, a vehicular device, a non-vehiculardevice, a mobile or portable device, a mobile phone, a cellulartelephone, a PCS device, a mobile or portable GPS device, a DVB device,a relatively small computing device, a non-desktop computer, a “CarrySmall Live Large” (CSLL) device, an Ultra Mobile Device (UMD), an UltraMobile PC (UMPC), a Mobile Internet Device (MID), an “Origami” device orcomputing device, a video device, an audio device, an A/V device, agaming device, a media player, a Smartphone, or the like.

In some demonstrative embodiments, UE 102, eNB 104, AP 106, and/or NodeB 196 may include one or more wireless communication units to performwireless communication between UE 102, RAN 119, AP 106 and/or with oneor more other wireless communication devices, e.g., as described below.

In some demonstrative embodiments, UE 102 may include a cellularTransceiver (TRx) 146 to communicate with RAN 119, and a WLAN TRx 147 tocommunicate with AP 106.

In some demonstrative embodiments, cellular TRx 146 and/or WLAN TRx 147may include, or may be associated with, one or more antennas. In oneexample, UE 102 may include at least two antennas, e.g., antennas 112and 114, or any other number of antennas, e.g., one antenna or more thantwo antennas.

In some demonstrative embodiments, antennas 112, and/or 114 may includeany type of antennas suitable for transmitting and/or receiving wirelesscommunication signals, blocks, frames, transmission streams, packets,messages and/or data. For example, antennas 112 and/or 114 may includeany suitable configuration, structure and/or arrangement of one or moreantenna elements, components, units, assemblies and/or arrays. Forexample, antennas 112 and/or 114 may include a phased array antenna, adipole antenna, a single element antenna, a set of switched beamantennas, and/or the like.

In some embodiments, antennas 112 and/or 114 may implement transmit andreceive functionalities using separate transmit and receive antennaelements. In some embodiments, antennas 112 and/or 114 may implementtransmit and receive functionalities using common and/or integratedtransmit/receive elements.

In some demonstrative embodiments, cellular TRx 146 and/or WLAN TRx 147may include one or more wireless transmitters, receivers and/ortransceivers able to send and/or receive wireless communication signals,RF signals, frames, blocks, transmission streams, packets, messages,data items, and/or data.

In some demonstrative embodiments, WLAN TRx 147 may be configured tocommunicate with AP 106 over a WLAN link, and cellular transceiver 146may be configured to communicate with RAN 119 over a cellular link.

In some demonstrative embodiments, the WLAN link may include, forexample, a Wireless Fidelity (WiFi) link, a Wireless Gigabit (WiGig)link, or any other link. In some demonstrative embodiments, the WLANlink may include, for example, a link over the 2.4 Gigahertz (GHz) or 5GHz frequency band, the 60 GHz frequency band, or any other frequencyband.

In some demonstrative embodiments, cellular TRx 146 may include amultiple input multiple output (MIMO) transmitters receivers system (notshown), which may be capable of performing antenna beamforming methods,if desired. In other embodiments, cellular TRx 146 may include any othertransmitters and/or receivers.

In some demonstrative embodiments, cellular TRx 146 may include a turbodecoder and/or a turbo encoder (not shown) for encoding and/or decodingdata bits into data symbols, if desired. In other embodiments, cellularTRx 146 may include any other encoder and/or decode.

In some demonstrative embodiments, cellular TRx 146 may include OFDMand/or SC-FDMA modulators and/or demodulators (not shown) configured tocommunicate OFDM signals over downlink channels, e.g., between RAN 119and UE 102, and SC-FDMA signals over uplink channels, e.g., between UE102 and RAN 119. In other embodiments, cellular TRx 146 may include anyother modulators and/or demodulators.

In some demonstrative embodiments, WLAN TRx 147 may establish a WLANlink with AP 106. For example, WLAN TRx 147 may perform thefunctionality of one or more STAs, e.g., one or more WiFi STAs, WLANSTAs, and/or millimeter Wave (mmWave) STAs. The WLAN link may include anuplink and/or a downlink. The WLAN downlink may include, for example, aunidirectional link from AP 106 to the one or more STAs. The uplink mayinclude, for example, a unidirectional link from a STA to AP 106.

In some demonstrative embodiments, UE 102 may also include, for example,one or more of a processor 124, an input unit 116, an output unit 118, amemory unit 120, and a storage unit 122. UE 102 may optionally includeother suitable hardware components and/or software components. In somedemonstrative embodiments, some or all of the components of UE 102 maybe enclosed in a common housing or packaging, and may be interconnectedor operably associated using one or more wired or wireless links.

In some demonstrative embodiments, MME 162 may also include, forexample, a processor 172 and/or a memory unit 171. MME 162 mayoptionally include other suitable hardware components and/or softwarecomponents. In some demonstrative embodiments, some or all of thecomponents of MME 162 may be enclosed in a common housing or packaging,and may be interconnected or operably associated using one or more wiredor wireless links. In other embodiments, components of MME 162 may bedistributed among multiple or separate devices.

Processor 124 and/or processor 172 includes, for example, a CentralProcessing Unit (CPU), a Digital Signal Processor (DSP), one or moreprocessor cores, a single-core processor, a dual-core processor, amultiple-core processor, a microprocessor, a host processor, acontroller, a plurality of processors or controllers, a chip, amicrochip, one or more circuits, circuitry, a logic unit, an IntegratedCircuit (IC), an Application-Specific IC (ASIC), or any other suitablemulti-purpose or specific processor or controller. Processor 124executes instructions, for example, of an Operating System (OS) of UE102 and/or of one or more suitable applications. Processor 172 executesinstructions, for example, of an Operating System (OS) of MME 162 and/orof one or more suitable applications.

Input unit 116 includes, for example, a keyboard, a keypad, a mouse, atouch-screen, a touch-pad, a track-ball, a stylus, a microphone, orother suitable pointing device or input device. Output unit 118includes, for example, a monitor, a screen, a touch-screen, a flat paneldisplay, a Cathode Ray Tube (CRT) display unit, a Liquid Crystal Display(LCD) display unit, a plasma display unit, one or more audio speakers orearphones, or other suitable output devices.

Memory unit 120 includes, for example, a Random Access Memory (RAM), aRead Only Memory (ROM), a Dynamic RAM (DRAM), a Synchronous DRAM(SD-RAM), a flash memory, a volatile memory, a non-volatile memory, acache memory, a buffer, a short term memory unit, a long term memoryunit, or other suitable memory units. Storage unit 122 includes, forexample, a hard disk drive, a floppy disk drive, a Compact Disk (CD)drive, a CD-ROM drive, a DVD drive, or other suitable removable ornon-removable storage units. Memory unit 120 and/or storage unit 122,for example, may store data processed by UE 102. Memory unit 171 maystore, for example, data processed by MME 162.

In some demonstrative embodiments, UE 102 may be configured to utilize acellular connection, e.g., a Long Term Evolution (LTE) cellularconnection, a Universal Mobile Telecommunications System (UMTS)connection or any other cellular connection, to communicate with RAN119, and a WLAN connection, e.g., a Wireless-Fidelity (WiFi) connectionor any other WLAN connection, to communicate with AP 106.

In some demonstrative embodiments, cellular TRx 146 utilize the cellularlink between UE 102 and RAN 119 to communicate traffic of one or morePDN connections, e.g., via one or more PGWs 173.

In some demonstrative embodiments, UE 102 may establish one or morebearers, e.g., one or more Evolved Packet-switched System (EPS) bearers,via the one or more PDN connections between UE 102 and one or more PGWs173.

In some demonstrative embodiments, one or more elements of system 100may perform the functionality of a HetNet, which may utilize adeployment of a mix of technologies, frequencies, cell sizes and/ornetwork architectures, for example, including cellular, WLAN, and/or thelike.

For example, the HetNet may be configured to provide a service through afirst wireless communication environment, e.g., a cellular network, andto maintain the service when switching to another communicationenvironment, e.g., WLAN. The HetNet architecture may enable utilizing amixture of wireless communication environments, e.g., a WLAN environmentand a cellular environment, for example, to optimally respond to rapidchanges in customer demand, reduce power consumption, reduce cost,increase efficiency and/or achieve any other benefit.

In one example, system 100 may utilize a Multi-tier, Multi-Radio AccessTechnology (Multi-RAT) Het-Net architecture, including a tier of smallcells, e.g., pico, femto, relay stations, WiFi APs, and the like,overlaid on top of a macro cellular deployment to augment networkcapacity.

In another example, system 100 may utilize Multi-RAT small cellsintegrating multiple radios such as WiFi and 3GPP air interfaces in asingle infrastructure device.

In other embodiments, system 100 may implement any other architectureand/or deployment.

In some demonstrative embodiments, utilizing the WLAN connection as adefault connection, e.g., as long as UE 102 receives from AP 106 astrong enough signal, may result in an increase in the congestion of theWLAN, e.g., if a large number of UEs simultaneously connect to the sameAP, which in turn may result in a decrease of throughput over the WLANconnection between UE 102 and AP 106.

In some demonstrative embodiments, system 100 may be configured toenable selective connection of UE 102 to the WLAN or the cellularnetwork, for example, based on one or more criteria and/or parameters,e.g., as described in detail below.

In some demonstrative embodiments, the selective connection between UE102 and RAN 119 and/or AP 106 may enable, for example, load balancingbetween the WLAN and the cellular network.

In some demonstrative embodiments, UE 102 may be configured tofacilitate a UE-centric (also referred to as “UE controlled”) accessnetwork selection scheme, in which UE 102 may select an access networkto be utilized by UE 102.

In some demonstrative embodiments, UE 102 may include a controller 145to control one or more functionalities of UE 102 and/or to control oneor more communications performed by UE, for example, to steer trafficbetween the WLAN and RAN 119, e.g., as described below.

In some demonstrative embodiments, controller 145 may include or may beimplemented using suitable circuitry, e.g., controller circuitry,scheduler circuitry, processor circuitry, memory circuitry, and/or anyother circuitry, which may be configured to perform at least part of thefunctionality of controller 145. Additionally or alternatively, one ormore functionalities of controller 145 may be implemented by logic,which may be executed by a machine and/or one or more processors, e.g.,as described below.

In some demonstrative embodiments, cellular TRx 146 may receive RANassistance information from RAN 119. The RAN assistance information mayinclude, for example, information configured to assist the UE-centricaccess network selection at UE 102.

In some demonstrative embodiments, the RAN assistance information mayinclude, for example, offload preference information; one or signalstrength thresholds, for example, one or more cellular thresholds, e.g.,including a Reference Signal Received Power (RSRP) threshold, a ReceivedSignal Code Power (RSCP) threshold, and/or any other threshold; and/orany other threshold, parameter and/or assistance information.

In some demonstrative embodiments, cellular TRx 146 may receive the RANassistance information via Radio Resource Control (RRC) signaling, e.g.,from eNB 104, and/or via any other message.

In some demonstrative embodiments, controller 145 may make a trafficsteering decision, for example, to steer traffic from a PDN connection,e.g., via RAN 119, to a WLAN connection, and/or from the WLAN connectionback to the PDN connection, for example, using the RAN assistanceinformation, e.g., as described below.

In some demonstrative embodiments, one or more PDN connections (“theoffloadable PDN connections”) may be offloaded to WLAN, while one ormore other PDN connections (“the non-offloadable PDN connections”) maynot be offloaded to WLAN. For example, an operator, e.g., of CN 160, maydefine, which PDN connections may be offloaded to WLAN, and/or which PDNconnections may not be offloaded to WLAN, e.g., based on any criteria.

In some demonstrative embodiments, information regarding, which PDNconnection may be offloaded to WLAN, and which PDN connection is not tobe offloaded to WLAN, may be provided to UE 102, for example, via RAN119, e.g., as described below.

In some demonstrative embodiments, cellular TRx 146 may receiveoffloadability information from RAN 119, e.g., as described below.

In some demonstrative embodiments, the ability to provide theoffloadability information to UE 102 via RAN 119 may enable an efficientimplementation of a UE-centric traffic steering scheme, for example,even if other messaging mechanism are not utilized, e.g., an Accessnetwork discovery and selection function (ANDSF) mechanism.

In some demonstrative embodiments, the offloadability information mayindicate which PDN connection of the one or more PDN connections, whichare utilized by UE 102, is able to be offloaded to the WLAN; and/orwhich PDN connection of the one or more PDN connections, which areutilized by UE 102, is not to be offloaded to the WLAN, e.g., asdescribed below.

In some demonstrative embodiments, the offloadability information mayindicate for a PDN connection, e.g., for each PDN connection, whether ornot the PDN connection is offloadable to the WLAN, e.g., as describedbelow.

In some demonstrative embodiments, cellular TRx 146 may receive theoffloadability information via Non-Access Stratum (NAS) signaling, e.g.,as described below.

In some demonstrative embodiments, cellular TRx 146 may receive theoffloadability information via NAS signaling from MME 162, e.g., asdescribed below.

In other demonstrative embodiments, cellular TRx 146 may receive theoffloadability information via any other message and/or from any otherelement of CN 160, for example, RRC signaling, e.g., as described below.

In some demonstrative embodiments, controller 145 may offload traffic ofat least one PDN connection to the WLAN based on the RAN assistanceinformation and the offloadability information, e.g., as describedbelow.

In some demonstrative embodiments, controller 145 may be configured tosteer traffic between RAN 119 and the WLAN at an APN granularity and/orresolution. For example, if controller 145 selects to steer a trafficflow of a PDN corresponding to an APN to or from the WLAN, controller145 may also steer all other traffic flows and/or traffic bearers of theAPN to or from the WLAN.

Reference is mad to FIG. 2, which illustrates a sequence diagram ofoperations performed by UE 202, a WLAN AP 204, an eNB 206, and a CN 208,in accordance with some demonstrative embodiments. In some demonstrativeembodiments, UE 202 may perform the functionality of UE 102 (FIG. 1),WLAN AP 204 may perform the functionality of AP 106 (FIG. 1), eNB 206may perform the functionality of eNB 104 (FIG. 1), and/or CN 208 mayperform the functionality of one or more elements of CN 160 (FIG. 1).

In some demonstrative embodiments, UE 202 may receive one or more WLANidentifiers 210 of one or more WLANs, e.g., an identifier of WLAN AP204.

In some demonstrative embodiments, WLAN identifiers 210 may be providedto UE 202 by RAN 119 (FIG. 1), e.g., via RRC signaling. For example, eNB206 may send to UE 202 an RRC signaling message including the WLANidentifiers 210. In one example, eNB 206 may receive (208) the WLANidentifiers from an Operations, Administration and Management (OAM)element 209, or from any other source.

In some demonstrative embodiments, UE 202 may receive offloadabilityinformation to indicate which PDN connections and/or which APNs may beoffloaded to WLAN, e.g., as described below.

In some demonstrative embodiments, UE 202 may receive the offloadabilityinformation from CN 208, for example, via NAS signaling 216, e.g., fromMME 162 (FIG. 1), e.g., as described below.

In some demonstrative embodiments, UE 202 may receive the offloadabilityinformation from eNB 206, for example, via RRC signaling 214, e.g., asdescribed below.

In some demonstrative embodiments, UE 202 may receive RAN assistanceinformation 218, e.g., from RAN 119 (FIG. 1). For example, eNB 206 maysend the RAN assistance information, e.g., via RRC signaling directed toUE 202, broadcast messages, and the like.

In some demonstrative embodiments, the WLAN identifier 210, theoffloadability information, and the RAN assistance information may becommunicated according to the order shown in FIG. 2. In otherembodiments, the WLAN identifier 210, the offloadability information,and the RAN assistance information may be communicated according to anyother different order.

In some demonstrative embodiments, UE 202 may perform one or moremeasurements (220), for example, measurements corresponding to RAN 119(FIG. 1) and/or measurements corresponding to WLAN AP 204, e.g., signalstrength measurements, throughput measurements, link conditionmeasurements, and the like.

In some demonstrative embodiments, UE 202 may evaluate (222) one or morerules to make a traffic steering decision with respect to one or morePDN connections. The one or more rules may include, for example, one ormore RAN rules, e.g., received from RAN 119 (FIG. 1).

In some demonstrative embodiments, the rules may include one or morerules configured to select to steer traffic to the WLAN or to the RAN,for example, based on the one or more measurement and the RAN assistanceinformation. For example, controller 145 (FIG. 1) may evaluate one ormore RAN rules from RAN 119 (FIG. 1), for example, based on acomparisons between a plurality of measurements and a plurality ofthresholds, e.g., as received in the RAN assistance information.

In one example, UE 202 may evaluate one or more of the following rules,and/or one or more other rules, for example, when UE 202 is camped on anode of RAN 119 (FIG. 1), e.g., eNB 206, and UE 202 detects at least oneWLAN AP 204:

if (measured_metric_A < threshold_A1) && (measured_metric_B >threshold_B1) && (measured_metric_C < threshold_C1 { steerTrafficToWLAN( ); } else {  steerTrafficTo3GPP( ); }wherein, for example, the measured_metric_A may include a measuredcellular signal strength, e.g., a measured RSRP/RSRQ for LTE, or ameasured RSCP for UMTS; the threshold_A1 may include, for example, athreshold corresponding to the measured_metric_A; the measured_metric_Bmay include a measurement of a WLAN signal strength, e.g., an RSSI; thethreshold_B1 may include, for example, a threshold corresponding to themeasured_metric_B; and/or the measured_metric_C may include ameasurement of a WLAN parameter, e.g., a WLAN BSS load, a WLAN backhaulload, or any other WLAN parameter; the threshold_C1 may include, forexample, a threshold corresponding to the measured_metric_C. Thethresholds threshold_A1, threshold_B1, and/or threshold_C1 may beprovided, for example, as part of RAN assistance information 218.

In some demonstrative embodiments, UE 202 may select whether or not tooffload traffic of one or more PDNs, which have been indicated asoffloadable, based on the one or more rules. For example, UE may selectto offload the one or more offloadable PDN connections to WLAN AP 204,e.g., if evaluation of the rules results in a “true” result. The UE mayselect, for example, not to offload the one or more offloadable PDNconnections and/or to move one or more PDN connections back from WLAN AP206 to the RAN, e.g., if evaluation of the rules results in a “false”result.

In some demonstrative embodiments, UE 202 may selectively move (224)traffic of the offloadable PDN connections, e.g., traffic of all PDNconnections belonging to an offloadable APN, based on the evaluation ofthe rules. For example, UE 202 may move the traffic of the offloadablePDN connections to WLAN AP 204, e.g., using WLAN Control Protocol (WLCP)signaling, for example, if the evaluation of the rules indicates thattraffic should be steered to the WLAN. The UE 202 may move the trafficof offloadable PDN connections, which have been previously moved to WLANAP 204, back to the Ran, for example, if the evaluation of the rulesindicates that traffic should not be steered to the WLAN.

Referring back to FIG. 1, in some demonstrative embodiments system 100may be configured to communicate the offloadability information betweenCN 160 and UE 102 via NAS signaling, e.g., as described below.

In some demonstrative embodiments, MME 162 may be configured todetermine the offloadability information, e.g., as described below.

In some demonstrative embodiments, MME 162 may include an offloadabilitydetermination module 168 to determine the offloadability information,e.g., as described below.

In some demonstrative embodiments, offloadability determination module168 may include or may be implemented using suitable circuitry, e.g.,controller circuitry, scheduler circuitry, processor circuitry, memorycircuitry, and/or any other circuitry, which may be configured toperform at least part of the functionality of module 168. Additionallyor alternatively, one or more functionalities of module 168 may beimplemented by logic, which may be executed by a machine and/or one ormore processors, e.g., as described below.

In some demonstrative embodiments, MME 162 may be configured to haveknowledge of whether or not traffic flowing on a given PDN connection isoffloadable to WLAN.

In some demonstrative embodiments, offloadability-determination module145 may determine the offloadability of a PDN connection, for example,based on an APN to which the PDN connection belongs.

In some demonstrative embodiments, MME 162 may be configured todetermine the offloadability of a PDN connection, for example, based ona list of offloadable APNs, e.g., which may be received from HSS 161.For example, MME 162 may determine if the PDN connection is offloadableor not, e.g., based on comparing an APN of the PDN connection with thelist of offloadable APNs.

In some demonstrative embodiments, HSS interface 166 may receive APNoffloadability information from HSS 161. The APN offloadabilityinformation may include, for example, information to indicate one ormore offloadable APNs, which are allowed for WLAN offloading.

In some demonstrative embodiments, HSS interface 166 may receive APNoffloadability information from HSS 161, for example, as part of anattach procedure, e.g., upon establishment of the PDN connection.

In some demonstrative embodiments, offloadability-determination module168 may be configured to determine, based on the APN offloadabilityinformation, the PDN offloadability information corresponding to one ormore PDN connections of a UE 102, e.g., as described below. The PDNoffloadability information may indicate, for example, which PDNconnection of the one or more PDN connections of UE 102 is able to beoffloaded to the WLAN and/or which PDN connection of the one or more PDNconnections of UE 102 is not to be offloaded to the WLAN, e.g., asdescribed above.

In other embodiments, MME 162 may be pre-configured with the list ofoffloadable APNs.

In some demonstrative embodiments, eNB interface 164 may send the PDNoffloadability information to UE 102 via eNB 104, e.g., as describedbelow.

In some demonstrative embodiments, MME 162 may send the PDNoffloadability information to UE 102 as part of a Notificationprocedure, e.g., using a NAS notification message. For example, eNBinterface 164 may send to UE 102 a NAS notification messagecorresponding to a PDN connection. The NAS notification message mayinclude a notification indicator information Element (IE) including anindication that the PDN connection is offloadable or not.

In some demonstrative embodiments, MME 162 may send the PDNoffloadability information to UE 102 as part of an EPS SessionManagement (ESM) information request procedure, e.g., using a NAS ESMinformation request message. For example, eNB interface 164 may send toUE 102 a NAS ESM information request message corresponding to a PDNconnection. The NAS ESM information request message may include anindication that the PDN connection is offloadable or not.

In some demonstrative embodiments, MME 162 may be configured to providethe PDN offloadability information to UE 102, for example, even if RAN119 does not support interworking with the WLAN.

FIG. 3 is a schematic illustration of a sequence diagram of operationsperformed by a UE 302, an eNB 304, and a MME 306, in accordance withsome demonstrative embodiments. For example, UE 302 may perform thefunctionality of UE 102 (FIG. 1), eNB 304 may perform the functionalityof eNB 104 (FIG. 1), and/or MME 306 may perform the functionality of MME162 (FIG. 1).

In some demonstrative embodiments, eNB 304 may send to MME 306 anindication 308 to indicate that eNB 304 supports interworking with aWLAN, e.g., 3GPP-WLAN interworking.

In some demonstrative embodiments, eNB 304 may send indication 308, forexample, as part of one or more S1AP messages. For example, eNB 304 maysend indication 308, for example, as part of one or more S1AP INITIAL UEmessages and/or as part of one or more S1AP UPLINK NAS TRANSPORTmessages. In one example, eNB 304 may send indication 308 as part ofevery S1AP INITIAL UE message and as part of every S1AP UPLINK NASTRANSPORT message sent to MME 306.

In some demonstrative embodiments, eNB 304 may send to MME 306 anindication to indicate that UE 302 supports interworking with a WLAN,e.g., 3GPP-WLAN interworking, for example, as part of the SLAP INITIALUE and/or SLAP UPLINK NAS TRANSPORT messages.

In some demonstrative embodiments, MME 306 may select to trigger sendinga signaling message 310 including PDN offloadability information 310 toUE 302, e.g., based on indication 308. For example, MME 306 may triggersignaling message 310, e.g., including a NAS Notification message or aNAS ESM information request message, for example, to inform UE 302 aboutthe traffic offloadability for an underlying PDN connection of UE 302.

Referring back to FIG. 1, in some demonstrative embodiments PGW 173 maybe configured to provide the PDN offloadability information to UE 102,e.g., as described below.

In some demonstrative embodiments, PGW 173 may be configured to providethe PDN offloadability to UE 102 via NAS signaling, e.g., as describedbelow.

In some demonstrative embodiments, PGW 173 may be configured to haveknowledge of whether or not traffic flowing on a given PDN connection isoffloadable to WLAN or not.

In some demonstrative embodiments, PGW 173 may determine theoffloadability of a PDN connection, for example, based on an APN towhich the PDN connection belongs.

In some demonstrative embodiments, PGW 173 may be configured todetermine the offloadability of a PDN connection based on a list ofoffloadable APNs, e.g., which may be received from HSS 161. For example,PGW 173 may determine if the PDN connection is offloadable or not, e.g.,based on comparing an APN of the PDN connection with the list ofoffloadable APNs.

In some demonstrative embodiments, PGW 173 may receive APNoffloadability information from HSS 161, for example, as part of anattach procedure, e.g., upon establishment of the PDN connection.

In some demonstrative embodiments, PGW 173 may be configured todetermine, based on the APN offloadability information, the PDNoffloadability information corresponding to one or more PDN connectionsof a UE 102. The PDN offloadability information may indicate, forexample, which PDN connection of the one or more PDN connections of UE102 is able to be offloaded to the WLAN and/or which PDN connection ofthe one or more PDN connections of UE 102 is not to be offloaded to theWLAN, e.g., as described above.

In other embodiments, PGW 173 may be pre-configured with the list ofoffloadable APNs.

In some demonstrative embodiments, PGW 173 may send to UE 102 the PDNoffloadability information corresponding to a PDN connection, forexample, upon establishment of the PDN connection, e.g., as part of anattach procedure, or as part of a UE requested PDN connectivityprocedure.

In some demonstrative embodiments, PGW 173 may send to UE 102 a messageincluding a Protocol Configuration Options (PCO) IE including anoffloadability parameter corresponding to a PDN connection, e.g., uponestablishment of the PDN connection. The offloadability parameter of thePCO IE may be configured to indicate to UE 102 whether the trafficcarried on the PDN connection is offloadable to WLAN, e.g., as describedbelow.

In some demonstrative embodiments, PGW 173 may send to UE 102 the PCO IEas part of, for example, a GPRS Tunneling Protocol for the control plane(GTP-C) message, e.g., a GTP-C Create Session Response message, a NASmessage, e.g., a NAS PDN Connectivity Accept message, or any other typeof message.

In some demonstrative embodiments, PGW 173 may send the PDNoffloadability information to UE 102 as part of an element of an“Additional Parameter list” in the PCO IE, e.g., as follows:

0001H (P-CSCF IPv6 Address);

0002H (IM CN Subsystem Signaling Flag);

0003H (DNS Server IPv6 Address);

0004H (Policy Control rejection code);

0005H (Selected Bearer Control Mode;

0006H (Reserved);

0007H (DSMIPv6 Home Agent Address);

0008H (DSMIPv6 Home Network Prefix);

0009H (DSMIPv6 IPv4 Home Agent Address);

000AH (Reserved);

000BH (Reserved);

000CH (P-CSCF IPv4 Address);

000DH (DNS Server IPv4 Address);

000EH (MSISDN);

000FH (IFOM-Support);

0010H (IPv4 Link MTU);

0011H (Network support of Local address in TFT indicator); and

FF00H to FFFFH reserved for operator specific use;

0012H (Offloadable traffic).

For example, when included in a PCO IE corresponding to a PDNconnection, the element “0012H (Offloadable traffic)” may indicatewhether or not the PDN connection is offloadable to WLAN.

In some demonstrative embodiments, the PDN offloadability informationmay be provided to UE 102 via RRC signaling, from example, by eNB 104,e.g., as described below.

In some demonstrative embodiments, CN 160 may be configured to provideto eNB 104 information indicating which bearers, e.g., Data RadioBearers (DRBs), may be offloaded to WLAN, e.g., as described below.

In some demonstrative embodiments, eNB 104 may maintain a mapping ofDRBs to Radio Access bearers, e.g., to EUTRAN Radio Access Bearers(E-RABs).

In some demonstrative embodiments, CN 160 may be configured to provideto UE 104 bearer offloadability information to indicate, for example,which E-RABs are offloadable to WLAN and/or which E-RABs are notoffloadable to WLAN.

In some demonstrative embodiments, offloadability determination module168 may be configured to determine which E-RABs are offloadable to WLANand/or which E-RABs are not offloadable to WLAN, for example, based onthe APN offloadability information, e.g., as described above.

In some demonstrative embodiments, MME 162 may send the beareroffloadability information to eNB 104, e.g., via eNB interface 164.

In some demonstrative embodiments, MME 162 may send the beareroffloadability information to eNB 104 as part of a S1Ap message, forexample, as part of an E-RAB Setup Request message, an E-RAB ModifyRequest message, and/or any other S1AP message.

In one example, the E-RAB Setup Request message may include the beareroffloadability information as part of a dedicated IE (“WLAN offloadableflag”), e.g., as follows:

E-RAB Setup Request

-   -   This message is sent by the MME and is used to request the eNB        to assign resources on Uu and S1 for one or several E-RABs.

Direction: MME→eNB

IE type IE/Group and Semantics Assigned Name Presence Range referencedescription Criticality Criticality Message Type M 9.2.1.1 YES rejectMME UE M 9.2.3.3 YES reject S1AP ID eNB UE M 9.2.3.4 YES reject S1AP IDUE Aggregate O 9.2.1.20 YES reject Maximum Bit Rate E-RAB to be 1 YESreject Setup List >E-RAB To 1 . . . <maxnoof EACH reject Be Setup ItemE-RABs> IEs >>E-RAB ID M 9.2.1.2 — >>E-RAB M 9.2.1.15 Includes — LevelQoS necessary Parameters QoS parameters. >>Transport M 9.2.2.1 — LayerAddress >>GTP-TEID M 9.2.2.2 EPC TEID. — >>NAS-PDU M 9.2.3.5— >>Correlation O 9.2.1.80 YES ignore ID >>WLAN O This flag offloadableindicates flag whether this E- RAB may be offloaded to WLAN. Range boundExplanation maxnoofE-RABs Maximum no. of E-RAB allowed towards one UE,the maximum value is 256.

In some demonstrative embodiments, eNB 104 may receive the beareroffloadability information from MME 162, and may determine which DRB maybe offloadable to WLAN, e.g., based on the bearer offloadabilityinformation.

In some demonstrative embodiments, eNB 104 may send an RRC signalingmessage to UE 102 to indicate which bearers may be offloaded to WLAN.The RRC signaling message may include, for example, a RRCConnectionSetupmessage, a RRCConnectionReconfiguration message, and/or any other RRCmessage.

In one example, eNB 104 may send to UE 102 a RRCConnectionSetup messageincluding a list of DRB identifiers, e.g., in the form of aDRB-ToWLANOffloadList, to indicate which DRBs may be offloaded to WLAN,e.g., as follows:

RRCConnectionSetup message -- ASN1START RRCConnectionSetup ::=  SEQUENCE{   rrc-TransactionIdentifier RRC-TransactionIdentifier,  criticalExtensions  CHOICE {     c1        CHOICE {      rrcConnectionSetup-r8     RRCConnectionSetup-r8-IEs,       spare7NULL,       spare6 NULL, spare5 NULL, spare4 NULL,       spare3 NULL,spare2 NULL, spare1 NULL     },     criticalExtensionsFuture SEQUENCE {}   } } RRCConnectionSetup-r8-IEs ::= SEQUENCE {  radioResourceConfigDedicated RadioResourceConfigDedicated,  nonCriticalExtension RRCConnectionSetup-v8a0-IEs   OPTIONAL }RRCConnectionSetup-v8a0-IEs ::= SEQUENCE {   lateNonCriticalExtensionOCTET STRING   OPTIONAL,   -- Need OP   nonCriticalExtensionRRCConnectionSetup-v1200-IEs OPTIONAL -- Need OP }RRCConnectionSetup-v1200-IEs ::= SEQUENCE {  drb-ToWLANOffloadListDRB-ToWLANOffloadList OPTIONAL  -- Need OP  nonCriticalExtensionSEQUENCE { }    OPTIONAL  -- Need OP } DRB-ToWLANOffloadList ::=SEQUENCE (SIZE (1..maxDRB)) OF DRB-ToWLANOffload DRB-ToAddMod ::=SEQUENCE {   drb-Identity    DRB-Identity,  nonCriticalExtensionSEQUENCE { }     OPTIONAL   -- Need OP } -- ASN1STOP

In some demonstrative embodiments, UE 102 may receive the RRC signalingmessage from eNB 104, and controller 145 may determine which PDN may beoffloadable, e.g., based on the offloadable bearers indicated by the RRCmessage.

In some demonstrative embodiments, controller 145 may determine withrespect to a DRB indicated by the RRC message, which PDN connection andAPN the DRB belongs to, and controller 145 may steer traffic of all PDNconnections belonging to the APN to or from the WLAN.

In some demonstrative embodiments, controller 145 may store the PDNoffloadability information, and controller 145 may use the PDNoffloadability information, e.g., even when UE 102 is at an Idle mode.

In some demonstrative embodiments, the APN offloadability informationregarding, which APNs are offloadable to WLAN may be pre-provisioned inUE 102, for example, using an OMA-DM procedure, or any other procedure.According to these embodiments, controller 145 may be able to determinewhich PDN connection is offloadable or not based on the pre-provisionedAPN offloadability information.

FIG. 4 is a schematic flow-chart illustration of a method of providingoffloadability information to a UE, in accordance with somedemonstrative embodiments. In some demonstrative embodiments, one ormore operations of the method of FIG. 4 may be performed by a CNelement, for example, an MME, e.g., MME 162 (FIG. 1).

As indicated at block 402, the method may include determining anoffloadability of a PDN connection of one or more PDN connection of aUE. For example, offloadability-determination module 168 (FIG. 1) maydetermine the PDN offloadability information corresponding to one ormore PDN connections of UE 102 (FIG. 1), e.g., as described above.

In some demonstrative embodiments, determining the offloadability of thePDN connection may include determining the offloadability of the PDNbased an offloadability of an APN corresponding to the PDN connection,e.g., as described below.

As indicated at block 404, the method may include receiving APNoffloadability information from an HSS, the APN offloadabilityinformation to indicate one or more offloadable APNs, which are allowedfor WLAN offloading. For example, HSS interface 1666 (FIG. 1) mayreceive the APN offloadability information from HSS 161 (FIG. 1), e.g.,as described above.

As indicated at block 406, the method may include receiving PDNinformation of the one or more PDN connections of the UE. For example,MME 162 (FIG. 1) may receive the PDN information corresponding to theone or more connections of UE 102 (FIG. 1), e.g., as described above.

As indicated at block 408, the method may include determining theoffloadability of the PDN connection, based on the APN offloadabilityinformation. For example, offloadability-determination module 168(FIG. 1) may determine the PDN offloadability information correspondingto the one or more PDN connections of UE 102 (FIG. 1) based on the APNoffloadability information, e.g., as described above.

As indicated at block 410, the method may include sending to the UE PDNoffloadability information indicating the offloadability of the PDNconnection. For example, eNB interface 164 (FIG. 1) may send the PDNoffloadability information to UE 102 (FIG. 1) via eNB 104 (FIG. 1),e.g., as described above.

Reference is made to FIG. 5, which schematically illustrates a method ofUE-centric access network selection, in accordance with somedemonstrative embodiments. In some embodiments, one or more of theoperations of the method of FIG. 5 may be performed by a wirelesscommunication system e.g., system 100 (FIG. 1); and/or a wirelesscommunication device, e.g., UE 102 (FIG. 1).

As indicated at block 502, the method may include communicating trafficof one or more PDN connections via a cellular link. For example,cellular TRx 146 (FIG. 1) may communicate traffic of one or more PDNconnections via a cellular link with RAN 119 (FIG. 1), e.g., asdescribed above.

As indicated at block 504, the method may include receiving RANassistance information. For example, cellular TRx 146 (FIG. 1) mayreceive RAN assistance information from RAN 119 (FIG. 1), e.g., asdescribed above.

As indicated at block 506, the method may include receivingoffloadability information indicating which PDN connection of the one ormore PDN connections is able to be offloaded to a WLAN. For example,cellular TRx 146 (FIG. 1) may receive the PDN offloadability informationfrom RAN 119 (FIG. 1), e.g., as described above.

As indicated at block 508, the method may include offloading traffic ofat least one PDN connection to the WLAN based on the RAN assistanceinformation and the offloadability information. For example, controller145 (FIG. 1) may offload traffic of at least one PDN connection to theWLAN based on the RAN assistance information and the PDN offloadabilityinformation, e.g., as described above.

Reference is made to FIG. 6, which schematically illustrates a productof manufacture 600, in accordance with some demonstrative embodiments.Product 600 may include a non-transitory machine-readable storage medium602 to store logic 604, which may be used, for example, to perform atleast part of the functionality of UE 102 (FIG. 1), eNB 104 (FIG. 1),node B 196 (FIG. 1), MME 162 (FIG. 1), controller 145 (FIG. 1), and/oroffloadability determination module 168 (FIG. 1), and/or to perform oneor more operations of the method of FIGS. 4 and/or 5. The phrase“non-transitory machine-readable medium” is directed to include allcomputer-readable media, with the sole exception being a transitorypropagating signal.

In some demonstrative embodiments, product 600 and/or machine-readablestorage medium 602 may include one or more types of computer-readablestorage media capable of storing data, including volatile memory,non-volatile memory, removable or non-removable memory, erasable ornon-erasable memory, writeable or re-writeable memory, and the like. Forexample, machine-readable storage medium 602 may include, RAM, DRAM,Double-Data-Rate DRAM (DDR-DRAM), SDRAM, static RAM (SRAM), ROM,programmable ROM (PROM), erasable programmable ROM (EPROM), electricallyerasable programmable ROM (EEPROM), Compact Disk ROM (CD-ROM), CompactDisk Recordable (CD-R), Compact Disk Rewriteable (CD-RW), flash memory(e.g., NOR or NAND flash memory), content addressable memory (CAM),polymer memory, phase-change memory, ferroelectric memory,silicon-oxide-nitride-oxide-silicon (SONOS) memory, a disk, a floppydisk, a hard drive, an optical disk, a magnetic disk, a card, a magneticcard, an optical card, a tape, a cassette, and the like. Thecomputer-readable storage media may include any suitable media involvedwith downloading or transferring a computer program from a remotecomputer to a requesting computer carried by data signals embodied in acarrier wave or other propagation medium through a communication link,e.g., a modem, radio or network connection.

In some demonstrative embodiments, logic 604 may include instructions,data, and/or code, which, if executed by a machine, may cause themachine to perform a method, process and/or operations as describedherein. The machine may include, for example, any suitable processingplatform, computing platform, computing device, processing device,computing system, processing system, computer, processor, or the like,and may be implemented using any suitable combination of hardware,software, firmware, and the like.

In some demonstrative embodiments, logic 604 may include, or may beimplemented as, software, a software module, an application, a program,a subroutine, instructions, an instruction set, computing code, words,values, symbols, and the like. The instructions may include any suitabletype of code, such as source code, compiled code, interpreted code,executable code, static code, dynamic code, and the like. Theinstructions may be implemented according to a predefined computerlanguage, manner or syntax, for instructing a processor to perform acertain function. The instructions may be implemented using any suitablehigh-level, low-level, object-oriented, visual, compiled and/orinterpreted programming language, such as C, C++, Java, BASIC, Matlab,Pascal, Visual BASIC, assembly language, machine code, and the like.

EXAMPLES

The following examples pertain to further embodiments.

Example 1 includes a User Equipment (UE) comprising a Wireless LocalArea Network (WLAN) transceiver to communicate with a WLAN; a cellulartransceiver to communicate via a cellular link traffic of one or morePacket Data Network (PDN) connections, the cellular transceiver toreceive Radio Access Network (RAN) assistance information, andoffloadability information indicating which PDN connection of the one ormore PDN connections is able to be offloaded to the WLAN; and controlcircuitry to offload traffic of at least one PDN connection to the WLANbased on the RAN assistance information and the offloadabilityinformation.

Example 2 includes the subject matter of Example 1, and optionally,wherein the offloadability information indicates for each PDNconnection, whether or not the PDN connection is offloadable to theWLAN.

Example 3 includes the subject matter of Example 1 or 2, and optionally,wherein the cellular transceiver is to receive the RAN assistanceinformation via Radio Resource Control (RRC) signaling.

Example 4 includes the subject matter of any one of Examples 1-3, andoptionally, wherein the cellular transceiver is to receive theoffloadability information from a Mobility Management Entity (MME).

Example 5 includes the subject matter of Example 4, and optionally,wherein the cellular transceiver is to receive the offloadabilityinformation via Non-Access Stratum (NAS) signaling.

Example 6 includes the subject matter of Example 5, and optionally,wherein the cellular transceiver is to receive the offloadabilityinformation in a NAS notification message.

Example 7 includes the subject matter of Example 5, and optionally,wherein the cellular transceiver is to receive the offloadabilityinformation in an Evolved Packet Switch (EPS) Session Management (ESM)information message.

Example 8 includes the subject matter of any one of Examples 1-7, andoptionally, wherein the RAN assistance information comprises offloadpreference information.

Example 9 includes the subject matter of any one of Examples 1-8, andoptionally, wherein the RAN assistance information comprises one or moresignal strength thresholds.

Example 10 includes the subject matter of any one of Examples 1-9, andoptionally, comprising one or more antennas, a memory and a processor.

Example 11 includes a Mobility Management Entity (MME) comprising a HomeSubscriber Server (HSS) interface to receive Access Point Name (APN)offloadability information from an HSS, the APN offloadabilityinformation to indicate one or more offloadable APNs, which are allowedfor Wireless Local Area Network (WLAN) offloading;offloadability-determination circuitry configured to determine, based onthe APN offloadability information, Packet Data Network (PDN)offloadability information corresponding to one or more PDN connectionsof a User Equipment (UE), the PDN offloadability information indicatingwhich PDN connection of the one or more PDN connections is able to beoffloaded to a WLAN; and an Evolved Node B (eNB) interface to send thePDN offloadability information to the UE via an Evolved Node B (eNB).

Example 12 includes the subject matter of Example 11, and optionally,wherein the APN offloadability information includes a list ofoffloadable APNs.

Example 13 includes the subject matter of Example 11 or 12, andoptionally, wherein the PDN offloadability information indicates foreach PDN connection, whether or not the PDN connection is offloadable tothe WLAN.

Example 14 includes the subject matter of any one of Examples 11-13, andoptionally, wherein the eNB interface is to send the PDN offloadabilityinformation to the UE via Non-Access Stratum (NAS) signaling.

Example 15 includes the subject matter of Example 14, and optionally,wherein the eNB interface is to send the PDN offloadability informationto the UE in a NAS notification message.

Example 16 includes the subject matter of Example 14, and optionally,wherein the eNB interface is to send the PDN offloadability informationto the UE in an Evolved Packet Switch (EPS) Session Management (ESM)information message.

Example 17 includes the subject matter of any one of Examples 11-16, andoptionally, comprising a memory, and a processor.

Example 18 includes a wireless communication system including at leastone User Equipment (UE), the UE comprising one or more antennas; amemory; a processor; an input unit; and output unit; a Wireless LocalArea Network (WLAN) transceiver to communicate with a WLAN; a cellulartransceiver to communicate via a cellular link traffic of one or morePacket Data Network (PDN) connections, the cellular transceiver toreceive Radio Access Network (RAN) assistance information, andoffloadability information indicating which PDN connection of the one ormore PDN connections is able to be offloaded to the WLAN; and controlcircuitry to offload traffic of at least one PDN connection to the WLANbased on the RAN assistance information and the offloadabilityinformation.

Example 19 includes the subject matter of Example 18, and optionally,wherein the offloadability information indicates for each PDNconnection, whether or not the PDN connection is offloadable to theWLAN.

Example 20 includes the subject matter of Example 18 or 19, andoptionally, wherein the cellular transceiver is to receive the RANassistance information via Radio Resource Control (RRC) signaling.

Example 21 includes the subject matter of any one of Examples 18-20, andoptionally, wherein the cellular transceiver is to receive theoffloadability information from a Mobility Management Entity (MME).

Example 22 includes the subject matter of Example 21, and optionally,wherein the cellular transceiver is to receive the offloadabilityinformation via Non-Access Stratum (NAS) signaling.

Example 23 includes the subject matter of Example 22, and optionally,wherein the cellular transceiver is to receive the offloadabilityinformation in a NAS notification message.

Example 24 includes the subject matter of Example 22, and optionally,wherein the cellular transceiver is to receive the offloadabilityinformation in an Evolved Packet Switch (EPS) Session Management (ESM)information message.

Example 25 includes the subject matter of any one of Examples 18-24, andoptionally, wherein the RAN assistance information comprises offloadpreference information.

Example 26 includes the subject matter of any one of Examples 18-25, andoptionally, wherein the RAN assistance information comprises one or moresignal strength thresholds.

Example 27 includes a Core Network (CN) comprising a Mobility ManagementEntity (MME), the MME comprising a memory; a processor; a HomeSubscriber Server (HSS) interface to receive Access Point Name (APN)offloadability information from an HSS, the APN offloadabilityinformation to indicate one or more offloadable APNs, which are allowedfor Wireless Local Area Network (WLAN) offloading; anoffloadability-determination module configured to determine, based onthe APN offloadability information, Packet Data Network (PDN)offloadability information corresponding to one or more PDN connectionsof a User Equipment (UE), the PDN offloadability information indicatingwhich PDN connection of the one or more PDN connections is able to beoffloaded to a WLAN; and an Evolved Node B (eNB) interface to send thePDN offloadability information to the UE via an Evolved Node B (eNB).

Example 28 includes the subject matter of Example 27, and optionally,wherein the APN offloadability information includes a list ofoffloadable APNs.

Example 29 includes the subject matter of Example 27 or 28, andoptionally, wherein the PDN offloadability information indicates foreach PDN connection, whether or not the PDN connection is offloadable tothe WLAN.

Example 30 includes the subject matter of any one of Examples 27-29, andoptionally, wherein the eNB interface is to send the PDN offloadabilityinformation to the UE via Non-Access Stratum (NAS) signaling.

Example 31 includes the subject matter of Example 30, and optionally,wherein the eNB interface is to send the PDN offloadability informationto the UE in a NAS notification message.

Example 32 includes the subject matter of Example 30, and optionally,wherein the eNB interface is to send the PDN offloadability informationto the UE in an Evolved Packet Switch (EPS) Session Management (ESM)information message.

Example 33 includes a method to be performed by a User Equipment (UE),the method comprising communicating traffic of one or more Packet DataNetwork (PDN) connections via a cellular link; receiving Radio AccessNetwork (RAN) assistance information, and offloadability informationindicating which PDN connection of the one or more PDN connections isable to be offloaded to a Wireless Local Area Network (WLAN); andoffloading traffic of at least one PDN connection to the WLAN based onthe RAN assistance information and the offloadability information.

Example 34 includes the subject matter of Example 33, and optionally,wherein the offloadability information indicates for each PDNconnection, whether or not the PDN connection is offloadable to theWLAN.

Example 35 includes the subject matter of Example 33 or 34, andoptionally, comprising receiving the RAN assistance information viaRadio Resource Control (RRC) signaling.

Example 36 includes the subject matter of any one of Examples 33-35, andoptionally, comprising receiving the offloadability information from aMobility Management Entity (MME).

Example 37 includes the subject matter of Example 36, and optionally,comprising receiving the offloadability information via Non-AccessStratum (NAS) signaling.

Example 38 includes the subject matter of Example 37, and optionally,comprising receiving the offloadability information in a NASnotification message.

Example 39 includes the subject matter of Example 37, and optionally,comprising receiving the offloadability information in an Evolved PacketSwitch (EPS) Session Management (ESM) information message.

Example 40 includes the subject matter of any one of Examples 33-39, andoptionally, wherein the RAN assistance information comprises offloadpreference information.

Example 41 includes the subject matter of any one of Examples 33-40, andoptionally, wherein the RAN assistance information comprises one or moresignal strength thresholds.

Example 42 includes a method to be performed at a Mobility ManagementEntity (MME), the method comprising receiving Access Point Name (APN)offloadability information from a Home Subscriber Server (HSS), the APNoffloadability information to indicate one or more offloadable APNs,which are allowed for Wireless Local Area Network (WLAN) offloading;receiving Packet Data Network (PDN) information of one or more PDNconnections of a User Equipment (UE); determining an offloadability of aPDN connection of the one or more PDN connection, based on the APNoffloadability information; and sending to the UE PDN offloadabilityinformation indicating the offloadability of the PDN connection.

Example 43 includes the subject matter of Example 42, and optionally,wherein the APN offloadability information includes a list ofoffloadable APNs.

Example 44 includes the subject matter of Example 42 or 43, andoptionally, wherein the PDN offloadability information indicates foreach PDN connection, whether or not the PDN connection is offloadable tothe WLAN.

Example 45 includes the subject matter of any one of Examples 42-44, andoptionally, comprising sending the PDN offloadability information to theUE via Non-Access Stratum (NAS) signaling.

Example 46 includes the subject matter of Example 45, and optionally,comprising sending the PDN offloadability information to the UE in a NASnotification message.

Example 47 includes the subject matter of Example 45, and optionally,comprising sending the PDN offloadability information to the UE in anEvolved Packet Switch (EPS) Session Management (ESM) informationmessage.

Example 48 includes a product including one or more tangiblecomputer-readable non-transitory storage media comprisingcomputer-executable instructions operable to, when executed by at leastone computer processor, enable the at least one computer processor toimplement a method at a User Equipment (UE), the method comprisingcommunicating traffic of one or more Packet Data Network (PDN)connections via a cellular link; receiving Radio Access Network (RAN)assistance information, and offloadability information indicating whichPDN connection of the one or more PDN connections is able to beoffloaded to a Wireless Local Area Network (WLAN); and offloadingtraffic of at least one PDN connection to the WLAN based on the RANassistance information and the offloadability information.

Example 49 includes the subject matter of Example 48, and optionally,wherein the offloadability information indicates for each PDNconnection, whether or not the PDN connection is offloadable to theWLAN.

Example 50 includes the subject matter of Example 48 or 49, andoptionally, wherein the method comprises receiving the RAN assistanceinformation via Radio Resource Control (RRC) signaling.

Example 51 includes the subject matter of any one of Examples 48-50, andoptionally, wherein the method comprises receiving the offloadabilityinformation from a Mobility Management Entity (MME).

Example 52 includes the subject matter of Example 51, and optionally,wherein the method comprises receiving the offloadability informationvia Non-Access Stratum (NAS) signaling.

Example 53 includes the subject matter of Example 52, and optionally,wherein the method comprises receiving the offloadability information ina NAS notification message.

Example 54 includes the subject matter of Example 52, and optionally,wherein the method comprises receiving the offloadability information inan Evolved Packet Switch (EPS) Session Management (ESM) informationmessage.

Example 55 includes the subject matter of any one of Examples 48-54, andoptionally, wherein the RAN assistance information comprises offloadpreference information.

Example 56 includes the subject matter of any one of Examples 48-55, andoptionally, wherein the RAN assistance information comprises one or moresignal strength thresholds.

Example 57 includes a product including one or more tangiblecomputer-readable non-transitory storage media comprisingcomputer-executable instructions operable to, when executed by at leastone computer processor, enable the at least one computer processor toimplement a method at a Mobility Management Entity (MME), the methodcomprising receiving Access Point Name (APN) offloadability informationfrom a Home Subscriber Server (HSS), the APN offloadability informationto indicate one or more offloadable APNs, which are allowed for WirelessLocal Area Network (WLAN) offloading; receiving Packet Data Network(PDN) information of one or more PDN connections of a User Equipment(UE); determining an offloadability of a PDN connection of the one ormore PDN connection, based on the APN offloadability information; andsending to the UE PDN offloadability information indicating theoffloadability of the PDN connection.

Example 58 includes the subject matter of Example 57, and optionally,wherein the APN offloadability information includes a list ofoffloadable APNs.

Example 59 includes the subject matter of Example 57 or 58, andoptionally, wherein the PDN offloadability information indicates foreach PDN connection, whether or not the PDN connection is offloadable tothe WLAN.

Example 60 includes the subject matter of any one of Examples 57-59, andoptionally, wherein the method comprises sending the PDN offloadabilityinformation to the UE via Non-Access Stratum (NAS) signaling.

Example 61 includes the subject matter of Example 60, and optionally,wherein the method comprises sending the PDN offloadability informationto the UE in a NAS notification message.

Example 62 includes the subject matter of Example 60, and optionally,wherein the method comprises sending the PDN offloadability informationto the UE in an Evolved Packet Switch (EPS) Session Management (ESM)information message.

Example 63 includes an apparatus of wireless communication, theapparatus comprising means for communicating traffic of one or morePacket Data Network (PDN) connections via a cellular link; means forreceiving Radio Access Network (RAN) assistance information, andoffloadability information indicating which PDN connection of the one ormore PDN connections is able to be offloaded to a Wireless Local AreaNetwork (WLAN); and means for offloading traffic of at least one PDNconnection to the WLAN based on the RAN assistance information and theoffloadability information.

Example 64 includes the subject matter of Example 63, and optionally,wherein the offloadability information indicates for each PDNconnection, whether or not the PDN connection is offloadable to theWLAN.

Example 65 includes the subject matter of Example 63 or 64, andoptionally, comprising means for receiving the RAN assistanceinformation via Radio Resource Control (RRC) signaling.

Example 66 includes the subject matter of any one of Examples 63-65, andoptionally, comprising means for receiving the offloadabilityinformation from a Mobility Management Entity (MME).

Example 67 includes the subject matter of Example 66, and optionally,comprising means for receiving the offloadability information viaNon-Access Stratum (NAS) signaling.

Example 68 includes the subject matter of Example 67, and optionally,comprising means for receiving the offloadability information in a NASnotification message.

Example 69 includes the subject matter of Example 67, and optionally,comprising means for receiving the offloadability information in anEvolved Packet Switch (EPS) Session Management (ESM) informationmessage.

Example 70 includes the subject matter of any one of Examples 63-69, andoptionally, wherein the RAN assistance information comprises offloadpreference information.

Example 71 includes the subject matter of any one of Examples 63-70, andoptionally, wherein the RAN assistance information comprises one or moresignal strength thresholds.

Example 72 includes an apparatus of mobility management, the apparatuscomprising means for receiving Access Point Name (APN) offloadabilityinformation from a Home Subscriber Server (HSS), the APN offloadabilityinformation to indicate one or more offloadable APNs, which are allowedfor Wireless Local Area Network (WLAN) offloading; means for receivingPacket Data Network (PDN) information of one or more PDN connections ofa User Equipment (UE); means for determining an offloadability of a PDNconnection of the one or more PDN connection, based on the APNoffloadability information; and means for sending to the UE PDNoffloadability information indicating the offloadability of the PDNconnection.

Example 73 includes the subject matter of Example 72, and optionally,wherein the APN offloadability information includes a list ofoffloadable APNs.

Example 74 includes the subject matter of Example 72 or 73, andoptionally, wherein the PDN offloadability information indicates foreach PDN connection, whether or not the PDN connection is offloadable tothe WLAN.

Example 75 includes the subject matter of any one of Examples 72-74, andoptionally, comprising means for sending the PDN offloadabilityinformation to the UE via Non-Access Stratum (NAS) signaling.

Example 76 includes the subject matter of Example 75, and optionally,comprising means for sending the PDN offloadability information to theUE in a NAS notification message.

Example 77 includes the subject matter of Example 75, and optionally,comprising means for sending the PDN offloadability information to theUE in an Evolved Packet Switch (EPS) Session Management (ESM)information message.

Functions, operations, components and/or features described herein withreference to one or more embodiments, may be combined with, or may beutilized in combination with, one or more other functions, operations,components and/or features described herein with reference to one ormore other embodiments, or vice versa.

While certain features have been illustrated and described herein, manymodifications, substitutions, changes, and equivalents may occur tothose skilled in the art. It is, therefore, to be understood that theappended claims are intended to cover all such modifications and changesas fall within the true spirit of the disclosure.

What is claimed is:
 1. A User Equipment (UE) comprising: a WirelessLocal Area Network (WLAN) transceiver to communicate with a WLAN; acellular transceiver to communicate via a cellular link traffic of oneor more Packet Data Network (PDN) connections, the cellular transceiverto receive Radio Access Network (RAN) assistance information, andoffloadability information indicating which PDN connection of the one ormore PDN connections is to be allowed to be offloaded to the WLAN andwhich PDN connection is not to be allowed to be offloaded to the WLAN,the cellular transceiver to receive, in response to establishment of aPDN connection of the UE, a WLAN offloadability indication to indicatewhether the established PDN connection is offloadable or not offloadableto the WLAN; and control circuitry to offload traffic of at least onePDN connection to the WLAN based on the RAN assistance information andthe offloadability information.
 2. The UE of claim 1, wherein saidoffloadability information indicates for each PDN connection, whether ornot the PDN connection is offloadable to the WLAN.
 3. The UE of claim 1,wherein said cellular transceiver is to receive the RAN assistanceinformation via Radio Resource Control (RRC) signaling.
 4. The UE ofclaim 1, wherein said cellular transceiver is to receive theoffloadability information from a Mobility Management Entity (MME). 5.The UE of claim 4, wherein said cellular transceiver is to receive theoffloadability information via Non-Access Stratum (NAS) signaling. 6.The UE of claim 5, wherein said cellular transceiver is to receive theoffloadability information in a NAS notification message.
 7. The UE ofclaim 5, wherein said cellular transceiver is to receive theoffloadability information in an Evolved Packet Switch (EPS) SessionManagement (ESM) information message.
 8. The UE of claim 1, wherein theRAN assistance information comprises offload preference information. 9.The UE of claim 1, wherein the RAN assistance information comprises oneor more signal strength thresholds.
 10. The UE of claim 1 comprising oneor more antennas, a memory and a processor.
 11. A Mobility ManagementEntity (MME) comprising: a Home Subscriber Server (HSS) interface toreceive Access Point Name (APN) offloadability information from an HSS,the APN offloadability information to indicate one or more offloadableAPNs, which are allowed for Wireless Local Area Network (WLAN)offloading, the APN offloadability information to indicate, for an APN,whether WLAN offload is to be allowable or not allowable for the APN;offloadability-determination circuitry configured to determine, based atleast on the APN offloadability information, Packet Data Network (PDN)offloadability information corresponding to one or more PDN connectionsof a User Equipment (UE), the PDN offloadability information indicatingwhich PDN connection of the one or more PDN connections is to be allowedto be offloaded to a WLAN and which PDN connection is not to be allowedto be offloaded to the WLAN; and an Evolved Node B (eNB) interface to,in response to establishment of a PDN connection of the UE, send the PDNoffloadability information to the UE via an Evolved Node B (eNB), thePDN offloadability information to indicate whether the established PDNconnection is offloadable or not offloadable to the WLAN.
 12. The MME ofclaim 11, wherein said APN offloadability information includes a list ofoffloadable APNs.
 13. The MME of claim 11, wherein said PDNoffloadability information indicates for each PDN connection, whether ornot the PDN connection is offloadable to the WLAN.
 14. The MME of claim11, wherein the eNB interface is to send the PDN offloadabilityinformation to the UE via Non-Access Stratum (NAS) signaling.
 15. TheMME of claim 14, wherein said eNB interface is to send the PDNoffloadability information to the UE in a NAS notification message. 16.The MME of claim 14, wherein said eNB interface is to send the PDNoffloadability information to the UE in an Evolved Packet Switch (EPS)Session Management (ESM) information message.
 17. The MME of claim 11comprising a memory, and a processor.
 18. A method to be performed at aMobility Management Entity (MME), the method comprising: receivingAccess Point Name (APN) offloadability information from a HomeSubscriber Server (HSS), the APN offloadability information to indicateone or more offloadable APNs, which are allowed for Wireless Local AreaNetwork (WLAN) offloading, the APN offloadability information toindicate, for an APN, whether WLAN offload is to be allowable or notallowable for the APN; receiving Packet Data Network (PDN) informationof one or more PDN connections of a User Equipment (UE); determining PDNoffloadability information to indicate an offloadability of a PDNconnection of the one or more PDN connections, based at least on the APNoffloadability information, the PDN offloadability information toindicate which PDN connection of the one or more PDN connections is tobe allowed to be offloaded to WLAN and which PDN connection is not to beallowed to be offloaded to WLAN; and in response to establishment of aPDN connection of the UE, sending to the UE PDN offloadabilityinformation corresponding to the established PDN connection indicatingwhether the established PDN connection is offloadable or not offloadableto the WLAN.
 19. The method of claim 18, wherein said APN offloadabilityinformation includes a list of offloadable APNs.
 20. The method of claim18 comprising sending the PDN offloadability information to the UE viaNon-Access Stratum (NAS) signaling.
 21. The method of claim 18comprising sending the PDN offloadability information to the UE in a NASnotification message.
 22. A product including one or more tangiblenon-transitory computer-readable storage media comprisingcomputer-executable instructions operable to, when executed by at leastone computer processor, enable the at least one computer processor toimplement operations at a User Equipment (UE), the operationscomprising: communicating traffic of one or more Packet Data Network(PDN) connections via a cellular link; receiving Radio Access Network(RAN) assistance information, and offloadability information indicatingwhich PDN connection of the one or more PDN connections is to be allowedto be offloaded to a Wireless Local Area Network (WLAN) and which PDNconnection is not to be allowed to be offloaded to the WLAN; receiving,in response to establishment of a PDN connection of the UE, a WLANoffloadability indication to indicate whether the established PDNconnection is offloadable or not offloadable to the WLAN; and offloadingtraffic of at least one PDN connection to the WLAN based on the RANassistance information and the offloadability information.
 23. Theproduct of claim 22, wherein said offloadability information indicatesfor each PDN connection, whether or not the PDN connection isoffloadable to the WLAN.
 24. The product of claim 22, wherein theoperations comprise receiving the offloadability information from aMobility Management Entity (MME).
 25. The product of claim 24, whereinthe operations comprise receiving the offloadability information viaNon-Access Stratum (NAS) signaling.